Evaluation of Scalable Porous Si‐Rich Si/C Composites with Low Volume Expansion in Coin Cells to Prismatic Cell Formats
Li‐ion battery cells on the basis of Si‐containing anodes suffer from their large volume expansion of up to 300%, impeding their extensive application in the automotive field. Herein, the synthesis of a Si‐rich Si/C composite is introduced. The implemented porosity of the composite has a buffering e...
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| Veröffentlicht in: | Energy technology (Weinheim, Germany) Germany), 2020-07, Vol.8 (7), p.n/a, Article 2000217 |
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| creator | Müller, Verena Bernhard, Rebecca Wegener, Jennifer Pfeiffer, Jürgen Rössler, Stefan Scurtu, Rares-George Memm, Michaela Danzer, Michael A. Wohlfahrt-Mehrens, Margret |
| description | Li‐ion battery cells on the basis of Si‐containing anodes suffer from their large volume expansion of up to 300%, impeding their extensive application in the automotive field. Herein, the synthesis of a Si‐rich Si/C composite is introduced. The implemented porosity of the composite has a buffering effect on the Si volume changes during cycling. The scalability of the material from lab‐scale to industrial‐scale batch sizes as well as from coin cell ( |
| doi_str_mv | 10.1002/ente.202000217 |
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To enable the usability of Si‐based active materials in Li‐ion battery cells, a Si/C composite is introduced, buffering the volume expansion by embedded porosity. The synthesis is upscaled to enable the production of large cell formats up to prismatic (PHEV) size. The aging and swelling behavior of the Si/C composite|NMC811 pouch and PHEV cells is analyzed at different applied pressures.</description><identifier>ISSN: 2194-4288</identifier><identifier>EISSN: 2194-4296</identifier><identifier>DOI: 10.1002/ente.202000217</identifier><language>eng</language><publisher>WEINHEIM: Wiley</publisher><subject>Computed tomography ; Cycles ; dilatometry ; Energy & Fuels ; External pressure ; Lithium-ion batteries ; mechanical deformations ; Porosity ; prismatic cells ; Science & Technology ; Si/C composites ; Swelling ; Technology ; volume expansions</subject><ispartof>Energy technology (Weinheim, Germany), 2020-07, Vol.8 (7), p.n/a, Article 2000217</ispartof><rights>2020 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>20</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wos000531302600001</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c3567-1f25f939767c5fcaa70416a4481bfbaae9b56fd1c037686375236687d27f282e3</citedby><cites>FETCH-LOGICAL-c3567-1f25f939767c5fcaa70416a4481bfbaae9b56fd1c037686375236687d27f282e3</cites><orcidid>0000-0003-2291-2070 ; 0000-0003-1635-4930 ; 0000-0002-4135-7263</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fente.202000217$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fente.202000217$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,781,785,1418,27929,27930,28253,45579,45580</link.rule.ids></links><search><creatorcontrib>Müller, Verena</creatorcontrib><creatorcontrib>Bernhard, Rebecca</creatorcontrib><creatorcontrib>Wegener, Jennifer</creatorcontrib><creatorcontrib>Pfeiffer, Jürgen</creatorcontrib><creatorcontrib>Rössler, Stefan</creatorcontrib><creatorcontrib>Scurtu, Rares-George</creatorcontrib><creatorcontrib>Memm, Michaela</creatorcontrib><creatorcontrib>Danzer, Michael A.</creatorcontrib><creatorcontrib>Wohlfahrt-Mehrens, Margret</creatorcontrib><title>Evaluation of Scalable Porous Si‐Rich Si/C Composites with Low Volume Expansion in Coin Cells to Prismatic Cell Formats</title><title>Energy technology (Weinheim, Germany)</title><addtitle>ENERGY TECHNOL-GER</addtitle><description>Li‐ion battery cells on the basis of Si‐containing anodes suffer from their large volume expansion of up to 300%, impeding their extensive application in the automotive field. Herein, the synthesis of a Si‐rich Si/C composite is introduced. The implemented porosity of the composite has a buffering effect on the Si volume changes during cycling. The scalability of the material from lab‐scale to industrial‐scale batch sizes as well as from coin cell (<5 mAh), to pouch cell (≈0.75 Ah), and to prismatic (PHEV) cells (≈26 Ah) is demonstrated. The performance of the pouch cells and PHEV cells is further improved by cycling under an external mechanical pressure. The irreversible swelling of the pouch and the PHEV cells stays below 6% during cycling. Reproducible aging and swelling behavior of different cell types is observed and investigated in detail. The low irreversible volume increase is confirmed by X‐ray computer tomography (CT) measurements of the PHEV cells before and after cycling.
To enable the usability of Si‐based active materials in Li‐ion battery cells, a Si/C composite is introduced, buffering the volume expansion by embedded porosity. The synthesis is upscaled to enable the production of large cell formats up to prismatic (PHEV) size. The aging and swelling behavior of the Si/C composite|NMC811 pouch and PHEV cells is analyzed at different applied pressures.</description><subject>Computed tomography</subject><subject>Cycles</subject><subject>dilatometry</subject><subject>Energy & Fuels</subject><subject>External pressure</subject><subject>Lithium-ion batteries</subject><subject>mechanical deformations</subject><subject>Porosity</subject><subject>prismatic cells</subject><subject>Science & Technology</subject><subject>Si/C composites</subject><subject>Swelling</subject><subject>Technology</subject><subject>volume expansions</subject><issn>2194-4288</issn><issn>2194-4296</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>AOWDO</sourceid><recordid>eNqNkMtKxDAUhosoOOhsXQdcSsdcmqRdSqkXGHTwti1pTDBD29SkdZydj-Az-iSmjoxL3Zwb33_O4Y-iIwRnCEJ8qtpezTDEMDSI70QTjLIkTnDGdrd1mu5HU--XgUGQEgrJJFoXr6IeRG9sC6wGd1LUoqoVWFhnBw_uzOf7x62Rz6E6zUFum8560ysPVqZ_BnO7Ao-2HhoFirdOtH5cY9rAjUHVtQe9BQtnfBNOyO8ROLcudP4w2tOi9mr6kw-ih_PiPr-M5zcXV_nZPJaEMh4jjanOSMYZl1RLIThMEBNJkqJKV0KorKJMPyEJCWcpI5xiwljKnzDXOMWKHETHm72dsy-D8n25tINrw8kSJygjSUJoGqjZhpLOeu-ULjtnGuHWJYLl6HA5OlxuHQ6CdCNYqcpqL41qpdqKAkQJIhAzOLqdm_7b4twObR-kJ_-XBjr7oU2t1n-8VRbX98Xvk1-YqqA8</recordid><startdate>202007</startdate><enddate>202007</enddate><creator>Müller, Verena</creator><creator>Bernhard, Rebecca</creator><creator>Wegener, Jennifer</creator><creator>Pfeiffer, Jürgen</creator><creator>Rössler, Stefan</creator><creator>Scurtu, Rares-George</creator><creator>Memm, Michaela</creator><creator>Danzer, Michael A.</creator><creator>Wohlfahrt-Mehrens, Margret</creator><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>AOWDO</scope><scope>BLEPL</scope><scope>DTL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-2291-2070</orcidid><orcidid>https://orcid.org/0000-0003-1635-4930</orcidid><orcidid>https://orcid.org/0000-0002-4135-7263</orcidid></search><sort><creationdate>202007</creationdate><title>Evaluation of Scalable Porous Si‐Rich Si/C Composites with Low Volume Expansion in Coin Cells to Prismatic Cell Formats</title><author>Müller, Verena ; Bernhard, Rebecca ; Wegener, Jennifer ; Pfeiffer, Jürgen ; Rössler, Stefan ; Scurtu, Rares-George ; Memm, Michaela ; Danzer, Michael A. ; Wohlfahrt-Mehrens, Margret</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3567-1f25f939767c5fcaa70416a4481bfbaae9b56fd1c037686375236687d27f282e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Computed tomography</topic><topic>Cycles</topic><topic>dilatometry</topic><topic>Energy & Fuels</topic><topic>External pressure</topic><topic>Lithium-ion batteries</topic><topic>mechanical deformations</topic><topic>Porosity</topic><topic>prismatic cells</topic><topic>Science & Technology</topic><topic>Si/C composites</topic><topic>Swelling</topic><topic>Technology</topic><topic>volume expansions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Müller, Verena</creatorcontrib><creatorcontrib>Bernhard, Rebecca</creatorcontrib><creatorcontrib>Wegener, Jennifer</creatorcontrib><creatorcontrib>Pfeiffer, Jürgen</creatorcontrib><creatorcontrib>Rössler, Stefan</creatorcontrib><creatorcontrib>Scurtu, Rares-George</creatorcontrib><creatorcontrib>Memm, Michaela</creatorcontrib><creatorcontrib>Danzer, Michael A.</creatorcontrib><creatorcontrib>Wohlfahrt-Mehrens, Margret</creatorcontrib><collection>Web of Science - Science Citation Index Expanded - 2020</collection><collection>Web of Science Core Collection</collection><collection>Science Citation Index Expanded</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Energy technology (Weinheim, Germany)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Müller, Verena</au><au>Bernhard, Rebecca</au><au>Wegener, Jennifer</au><au>Pfeiffer, Jürgen</au><au>Rössler, Stefan</au><au>Scurtu, Rares-George</au><au>Memm, Michaela</au><au>Danzer, Michael A.</au><au>Wohlfahrt-Mehrens, Margret</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of Scalable Porous Si‐Rich Si/C Composites with Low Volume Expansion in Coin Cells to Prismatic Cell Formats</atitle><jtitle>Energy technology (Weinheim, Germany)</jtitle><stitle>ENERGY TECHNOL-GER</stitle><date>2020-07</date><risdate>2020</risdate><volume>8</volume><issue>7</issue><epage>n/a</epage><artnum>2000217</artnum><issn>2194-4288</issn><eissn>2194-4296</eissn><abstract>Li‐ion battery cells on the basis of Si‐containing anodes suffer from their large volume expansion of up to 300%, impeding their extensive application in the automotive field. Herein, the synthesis of a Si‐rich Si/C composite is introduced. The implemented porosity of the composite has a buffering effect on the Si volume changes during cycling. The scalability of the material from lab‐scale to industrial‐scale batch sizes as well as from coin cell (<5 mAh), to pouch cell (≈0.75 Ah), and to prismatic (PHEV) cells (≈26 Ah) is demonstrated. The performance of the pouch cells and PHEV cells is further improved by cycling under an external mechanical pressure. The irreversible swelling of the pouch and the PHEV cells stays below 6% during cycling. Reproducible aging and swelling behavior of different cell types is observed and investigated in detail. The low irreversible volume increase is confirmed by X‐ray computer tomography (CT) measurements of the PHEV cells before and after cycling.
To enable the usability of Si‐based active materials in Li‐ion battery cells, a Si/C composite is introduced, buffering the volume expansion by embedded porosity. The synthesis is upscaled to enable the production of large cell formats up to prismatic (PHEV) size. The aging and swelling behavior of the Si/C composite|NMC811 pouch and PHEV cells is analyzed at different applied pressures.</abstract><cop>WEINHEIM</cop><pub>Wiley</pub><doi>10.1002/ente.202000217</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0003-2291-2070</orcidid><orcidid>https://orcid.org/0000-0003-1635-4930</orcidid><orcidid>https://orcid.org/0000-0002-4135-7263</orcidid></addata></record> |
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| subjects | Computed tomography Cycles dilatometry Energy & Fuels External pressure Lithium-ion batteries mechanical deformations Porosity prismatic cells Science & Technology Si/C composites Swelling Technology volume expansions |
| title | Evaluation of Scalable Porous Si‐Rich Si/C Composites with Low Volume Expansion in Coin Cells to Prismatic Cell Formats |
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